Bethel Burial Ground - Credit: Wikimedia Commons
Bethel Burial Ground is a historic African American cemetery located in South Philadelphia, Pennsylvania, beneath part of the surface of Weccacoe Playground, which is bounded by Queen, S. Lawrence, Catherine, and S. Liethgow Streets. The burial ground was about 100 feet square and is located below the southwest corner of the current playground. Read more on Wikipedia
Source: en.wikipedia.org